| 摘要 |
PURPOSE:To much shorten the time of a cycle without fluctuating a tangential resistance, by calculating the position of start of grinding in terms of the relation between a grinding wheel and the machinable allowance of a workpiece to perform control to alter the traversing speed of a table depending on the machinable allowance. CONSTITUTION:The central processing unit 21 of a numerical controller 20, which is provided in a circuit for controlling a surface grinder, is made of a microprocessor. A memory 22, a data input unit 23 and an interface 24 are connected to the central processing unit 21. Drive units 25, 26 for driving servomotors 12, 15, respectively, are connected to the interface 24. The diameter of a grinding wheel, the machinable allowance of a workpiece, etc. Are entered into the memory 22 through the data input unit 23 and stored. The position of start of grinding of the workpiece with the grinding wheel is determined through a calculation made in the central processing unit 21 on the basis of the stored data. Control is performed to alter the traversing speed of a table in the determined position of start of grinding. |
